On Fri, 4 Jan 2008, hadley wickham wrote: > On 1/4/08, Prof Brian Ripley <[EMAIL PROTECTED]> wrote: >> What it is trying is >> >> % env R_DEFAULT_PACKAGES=NULL R >> >>> loadNamespace("ggplot2") >> >> The test is not new, so it would seem to be a change in ggplot2 since the >> version on CRAN. My guess is the your package is doing top-level >> computations, which `Writing R Extensions' warns against: >> >> The R code files should only create R objects and not call functions >> with side effects such as require and options. > > Thanks for the additional info. I've grepped for ^[^#\n ]+\( (which I > think should find any top-level function call) and didn't find > anything. I certainly can't think of any top level computations that > I'm doing apart from creating R functions and objects. Is there > anyway to get more details about what exactly I've done wrong?
As I said, that was a guess: if it is not the cause then I am in the dark. If you can send me the version doing this I can try to dig further. > Calling traceback after loadNamespace isn't helpful. > >> If you must deviate from that, you need to arrange for the environment you >> need: when loading a name space the Depends: packages are not loaded. > > Is this a recent change to R? No: that wording is ancient, and the test is not recent. > The package appears to work fine after > installation so I presume this check is protecting me from some more > subtle danger. The danger is that if some other package (or a user) does ggplot2::some_function_in_ggplot2 that this will fail if the package is not attached, similarly if a package name space imports from ggplot2. > If it's helpful, my depends line is: > Depends: R (>= 2.6), grid, reshape (>= 0.8.0), proto, splines, MASS, > RColorBrewer, colorspace > > so only proto or RColorBrewer should be a problem. > > Hadley > > -- Brian D. Ripley, [EMAIL PROTECTED] Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595 ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel